Jurgen Klopp missed Liverpool's training on Wednesday and was admitted to the hospital.
“He is being assessed by doctors and will be absent from training on Wednesday as a result,” said a statement from Liverpool. “There are currently no plans for Jürgen to remain in hospital beyond his appointment and he will therefore return home this evening; however, he may require further check-ups in the coming days.
“The club urges that the privacy of Jürgen, his family and other patients is respected while attending hospital visits.”
Klopp has missed a game before, at home to Sunderland in February 2016, when he was had appendicitis.
